US2455719A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Glass manufacture
Assignee: Individual
•
Filing: 1945-06-01
•
Granted: 1948-12-07
•
Expires: 1965-06-01
Abstract
No abstract record available.
Inventors
- 👤 Woldemar A Weyl
- 👤 Helen S Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:00
CPC Classifications
C; C03; C03C; C03C21/00; C03C21/008; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24355; Y10T428/24479; Y10T428/24595
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US254263A
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US1306505A
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US1328833A
Cited
US1698302A
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US1555852A
Cited
US1592429A
Cited
US2034987A
Cited
US2215039A
Cited
US2184316A
Cited
US2348704A
Cited
US2330193A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-12-07 | 1952-06-07 | 1952-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-12-07 | 1956-06-07 | 1956-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-12-07 | 1960-06-07 | 1960-12-07 | $7700.00 | Window Closed / Lapsed |